docs: def _example_from_definition(self, prop_spec):
          """Get an example from a property specification linked to a definition.
  
          Args:
              prop_spec: specification of the property you want an example of.
  
          Returns:
              An example.
          """
          # Get value from definition
          definition_name = self.get_definition_name_from_ref(prop_spec['$ref'])
  
          if self.build_one_definition_example(definition_name):
              example_dict = self.definitions_example[definition_name]
              if not isinstance(example_dict, dict):
                  return example_dict
              example = dict((example_name, example_value) for example_name, example_value in example_dict.items())
              return example